LineageOS/android_packages_modules_Connectivity
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Keep debug information in NetworkStats files

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Create two special SETs.

SET_DBG_VPN_IN is used by individual applications to know
how much traffic of the NetworkIdentity was actually moved
from a VPN app.
SET_DBG_VPN_OUT is used by the VPN app to know how much
traffic of the NetworkIdentity was deducted.

A debug application can restore the raw stats by these
entries.
  raw_traffic = recorded_entry (TAG_NONE, SET_ALL)
              + recorded_entry (TAG_NONE, SET_DBF_VPN_OUT)
              - recorded_entry (TAG_NONE, SET_DBF_VPN_IN)

The two debug SETs are not returned by
NetworkStatsService.openSession(). These debug entries are
retrieved by NetworkStatsCollection.dump().

Bug: 19536273
Change-Id: I03ef9f7667f5f2f48cbe3f6b11447fe7ead8ad3b
This commit is contained in:
Wenchao Tong
2015-03-17 16:14:23 -07:00
parent 5d4c045bcf
commit fdf2267b50
1 changed files with 26 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
core/tests/coretests/src/android/net/NetworkStatsTest.java
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@@ -18,6 +18,8 @@ package android.net;
import static android.net.NetworkStats.SET_DEFAULT;
import static android.net.NetworkStats.SET_FOREGROUND;
import static android.net.NetworkStats.SET_DBG_VPN_IN;
import static android.net.NetworkStats.SET_DBG_VPN_OUT;
import static android.net.NetworkStats.SET_ALL;
import static android.net.NetworkStats.IFACE_ALL;
import static android.net.NetworkStats.TAG_NONE;
@@ -346,7 +348,7 @@ public class NetworkStatsTest extends TestCase {
.addValues(underlyingIface, tunUid, SET_FOREGROUND, TAG_NONE, 0L, 0L, 0L, 0L, 0L);
assertTrue(delta.migrateTun(tunUid, tunIface, underlyingIface));
assertEquals(17, delta.size());
assertEquals(21, delta.size());
// tunIface and TEST_IFACE entries are not changed.
assertValues(delta, 0, tunIface, 10100, SET_DEFAULT, TAG_NONE,
@@ -377,14 +379,33 @@ public class NetworkStatsTest extends TestCase {
0L, 0L, 0L, 0L, 0L);
// New entries are added for new application's underlying Iface traffic
assertValues(delta, 13, underlyingIface, 10120, SET_DEFAULT, TAG_NONE,
assertContains(delta, underlyingIface, 10120, SET_DEFAULT, TAG_NONE,
72667L, 197L, 41872l, 219L, 0L);
assertValues(delta, 14, underlyingIface, 10120, SET_FOREGROUND, TAG_NONE,
assertContains(delta, underlyingIface, 10120, SET_FOREGROUND, TAG_NONE,
9297L, 17L, 3936, 19L, 0L);
assertValues(delta, 15, underlyingIface, 10120, SET_DEFAULT, testTag1,
assertContains(delta, underlyingIface, 10120, SET_DEFAULT, testTag1,
21691L, 41L, 13179L, 46L, 0L);
assertValues(delta, 16, underlyingIface, 10120, SET_FOREGROUND, testTag1,
assertContains(delta, underlyingIface, 10120, SET_FOREGROUND, testTag1,
1281L, 2L, 634L, 1L, 0L);
// New entries are added for debug purpose
assertContains(delta, underlyingIface, 10100, SET_DBG_VPN_IN, TAG_NONE,
39605L, 46L, 11690, 49, 0);
assertContains(delta, underlyingIface, 10120, SET_DBG_VPN_IN, TAG_NONE,
81964, 214, 45808, 238, 0);
assertContains(delta, underlyingIface, tunUid, SET_DBG_VPN_IN, TAG_NONE,
4983, 10, 1717, 10, 0);
assertContains(delta, underlyingIface, tunUid, SET_DBG_VPN_OUT, TAG_NONE,
126552, 270, 59215, 297, 0);
}
private static void assertContains(NetworkStats stats, String iface, int uid, int set,
int tag, long rxBytes, long rxPackets, long txBytes, long txPackets, long operations) {
int index = stats.findIndex(iface, uid, set, tag);
assertTrue(index != -1);
assertValues(stats, index, iface, uid, set, tag,
rxBytes, rxPackets, txBytes, txPackets, operations);
}
private static void assertValues(NetworkStats stats, int index, String iface, int uid, int set,